SOURCE

function writeDocument(variable) {
    document.write(variable + "<br/>");
} 
//定义一个时间对象
var oToday=new Date();
writeDocument(oToday);
//获取时间对象的年,月,日,时,分,秒
writeDocument("年:"+oToday.getFullYear());
writeDocument("月:"+(oToday.getMonth()+1));
writeDocument("日:"+oToday.getDate());
writeDocument("时:"+oToday.getHours());
writeDocument("分:"+oToday.getMinutes());
writeDocument("秒:"+oToday.getSeconds());
//设置事件对象的年,月,日,时,分,秒(2019-6-1 11:30:58 888)
var oMyDate=new Date();
oMyDate.setFullYear(2019);
oMyDate.setMonth(5);
oMyDate.setDate(1);
oMyDate.setHours(11);
oMyDate.setMinutes(30);
oMyDate.setSeconds(58,888);
writeDocument(oMyDate);
writeDocument("请你打印'今天是2022年3月22日 星期二 8:55 ' ----------------"); 
var oMyDate2=new Date(2022,2,22,8,55);
//oMyDate2.setday(2);
/*oMyDate.setFullYear(2022);
oMyDate.setMonth(2);
oMyDate.setDate(22);
oMyDate.setHours(8);
oMyDate.setMinutes(55);*/
writeDocument("今天是"+oMyDate2.getFullYear()+"年"+(oMyDate2.getMonth()+1)+"月"
+oMyDate2.getDate()+"日  星期"+oToday.getDay()+" "+oMyDate2.getHours()+":"+oMyDate2.getMinutes());